2-DIMENSIONAL PHOTONIC CRYSTAL HAVING AIR BRIDGE STRUCTURE AND ITS MANUFACTURING METHOD - Nano Science & Technology Knowledge Base - NanoData - European Union Observatory for Nanomaterials

EUON
NanoData
Patents
2-DIMENSIONAL PHOTONIC CRYSTAL HAVING AIR BRIDGE STRUCTURE AND ITS MANUFACTURING METHOD

2-DIMENSIONAL PHOTONIC CRYSTAL HAVING AIR BRIDGE STRUCTURE AND ITS MANUFACTURING METHOD

Patent Information
Patent	2-DIMENSIONAL PHOTONIC CRYSTAL HAVING AIR BRIDGE STRUCTURE AND ITS MANUFACTURING METHOD
Abstract	<P>PROBLEM TO BE SOLVED: To provide a 2-dimensional photonic crystal which has high mechanical strength and in which performance of a resonator is high. <P>SOLUTION: This 2-dimensional photonic crystal has a substrate consisting of an SiO<SB>2</SB>substrate layer 12 and an Si substrate layer 13 at the lower part of a main layer 11. The 2-dimensional crystal is formed by arranging holes 15 periodically in the main body layer 11. Moreover, The photonic crystal has a dotted defect 16 in which a part of the periodic arrangement of the holes 32 is made to be lost. The dotted defect 16 functions as a resonator which resonates to light having a specific wavelength. A space 17 is provided in the prescribed area of the SiO<SB>2</SB>substrate layer 12 while being made to face the dotted defect 16. With this configuration, since the main body layer 11 is supported on the substrate in the area other the area where the space 17 is formed, the mechanical strength of the 2-dimensional photonic crystal is high. Moreover, since the space 17 is present in the lower part of the defect 16 and light is easy to be locked in the dotted defect 16 , etc., by the difference of the refractive indexes of the main body layer 11 and that of air, the dotted defect 16 becomes a resonator having high performance. <P>COPYRIGHT: (C)2005,JPO&NCIPI
Patent Family	`34279549`
Year Applied	2003
Year Granted	2008
Online References 4
Website	http://worldwide.espacenet.com/publicationDetails/biblio?CC=JP&NR=2005077711A&KC=A&FT=D
Website	http://worldwide.espacenet.com/publicationDetails/biblio?CC=JP&NR=4063740B2&KC=B2&FT=D
Website	http://worldwide.espacenet.com/publicationDetails/biblio?CC=JP&NR=2005077711A&KC=A&FT=D
Website	http://worldwide.espacenet.com/publicationDetails/biblio?CC=JP&NR=4063740B2&KC=B2&FT=D

Showing 1-4 of 4 items.

Related Patent Family Members

Name	Sector	Abstract	Year Applied	Year Granted	Authority
Two-dimensional photonic crystal having air-bridge structure and method for manufacturing such a crystal	Construction Photonics	The present invention intends to provide a two-dimensional photonic crystal having a high level of mechanical strength and functioning as a high-efficiency resonator. The two-dimensional photonic crystal according to the... The present invention intends to provide a two-dimensional photonic crystal having a high level of mechanical strength and functioning as a high-efficiency resonator. The two-dimensional photonic crystal according to the present invention includes a slab layer 31 under which a clad layer 32 is located. In the slab layer 31, areas 35 having a refractive index different from that of the slab layer 31 are cyclically arranged to create a two-dimensional photonic crystal. A portion of the cyclic arrangement of the areas 35 are omitted to form a point-like defect 36. This defect 36 functions as a resonator at which a specific wavelength of light resonates. An air-bridge cavity 37 facing the point-like defect 36 is formed over a predetermined range of the clad layer 32. In this construction, the clad layer 32 supports the slab layer 31 except for the range over which the air-bridge space 37 is formed. Therefore, the two-dimensional photonic crystal has a high level of mechanical strength. The presence of the air-bridge space 37 under the point-like defect 36 makes it easy to confine light at the point-like defect 36 by the difference in the refractive index between the slab layer 31 and the air. Thus, the point-like defect 36 functions as a high-performance resonator.	2007	2009	US
Two-dimensional photonic crystal having air-bridge structure and method for manufacturing such a crystal	Construction Photonics	The present invention intends to provide a two-dimensional photonic crystal having a high level of mechanical strength and functioning as a high-efficiency resonator. The two-dimensional photonic crystal according to the... The present invention intends to provide a two-dimensional photonic crystal having a high level of mechanical strength and functioning as a high-efficiency resonator. The two-dimensional photonic crystal according to the present invention includes a slab layer 31 under which a clad layer 32 is located. In the slab layer 31, areas 35 having a refractive index different from that of the slab layer 31 are cyclically arranged to create a two-dimensional photonic crystal. A portion of the cyclic arrangement of the areas 35 are omitted to form a point-like defect 36. This defect 36 functions as a resonator at which a specific wavelength of light resonates. An air-bridge cavity 37 facing the point-like defect 36 is formed over a predetermined range of the clad layer 32. In this construction, the clad layer 32 supports the slab layer 31 except for the range over which the air-bridge space 37 is formed. Therefore, the two-dimensional photonic crystal has a high level of mechanical strength. The presence of the air-bridge space 37 under the point-like defect 36 makes it easy to confine light at the point-like defect 36 by the difference in the refractive index between the slab layer 31 and the air. Thus, the point-like defect 36 functions as a high-performance resonator.	2006	2008	US
TWO-DIMENSIONAL PHOTONIC CRYSTAL WITH AIR BRIDGE STRUCTURE AND MANUFACTURING METHOD FOR THE CRYSTAL	Construction Photonics	The present invention intends to provide a two-dimensional photonic crystal having a high level of mechanical strength and functioning as a high-efficiency resonator. The two-dimensional photonic crystal according to the... The present invention intends to provide a two-dimensional photonic crystal having a high level of mechanical strength and functioning as a high-efficiency resonator. The two-dimensional photonic crystal according to the present invention includes a slab layer 31 under which a clad layer 32 is located. In the slab layer 31, areas 35 having a refractive index different from that of the slab layer 31 are cyclically arranged to create a two-dimensional photonic crystal. A portion of the cyclic arrangement of the areas 35 are omitted to form a point-like defect 36. This defect 36 functions as a resonator at which a specific wavelength of light resonates. An air-bridge cavity 37 facing the point-like defect 36 is formed over a predetermined range of the clad layer 32. In this construction, the clad layer 32 supports the slab layer 31 except for the range over which the air-bridge space 37 is formed. Therefore, the two-dimensional photonic crystal has a high level of mechanical strength. The presence of the air-bridge space 37 under the point-like defect 36 makes it easy to confine light at the point-like defect 36 by the difference in the refractive index between the slab layer 31 and the air. Thus, the point-like defect 36 functions as a high-performance resonator.	2004	_____	EP
TWO-DIMENSIONAL PHOTONIC CRYSTAL WITH AIR BRIDGE STRUCTURE AND MANUFACTURING METHOD FOR THE CRYSTAL	Construction Photonics	A two-dimensional photonic crystal, wherein a clad layer (32) is disposed on the lower side of a slab layer (31), and areas (35) having refraction factors different from that of... A two-dimensional photonic crystal, wherein a clad layer (32) is disposed on the lower side of a slab layer (31), and areas (35) having refraction factors different from that of the slab layer (31) are cyclically disposed in the slab layer (31). Also, the crystal comprises a spot defect (36) formed by the missing of a part of the areas (35). The spot defect (36) forms a resonator resonating light of a specified wavelength. An air bridge space (37) is formed in the specified area of the clad layer (32) to face the spot defect (36). Since the slab layer (31) is supported by the clad layer (32) in those areas other than the area in which the air bridge space (37) is formed, the mechanical strength of the two-dimensional photonic crystal is high. Since the air bridge space (37) is present under the spot defect (36), light can be easily entrapped in the spot defect (36) due to a difference in refraction factor between the slab layer (31) and air. Accordingly, the spot defect (36) forms the resonator having high performance.	2004	_____	WO

Showing 1-2 of 2 items.

Sector Activity

Sector	Subsectors
Photonics	OTHER (1)
Construction	OTHER (1)

Showing 1-2 of 2 items.

Partners

Name	Organisation Type	Country
Kyoto University	higher education institution	Japan
TDK Corporation	private company	Japan